97997798116 has 27 divisors (see below), whose sum is σ = 172602157833. Its totient is φ = 48684913920.

The previous prime is 97997798089. The next prime is 97997798117. The reversal of 97997798116 is 61189779979.

The square root of 97997798116 is 313046.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23743728100 + 74254070016 = 154090^2 + 272496^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97997798117) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 120835351 + ... + 120836161.

Almost surely, 2^97997798116 is an apocalyptic number.

97997798116 is the 313046-th square number.

It is an amenable number.

97997798116 is a deficient number, since it is larger than the sum of its proper divisors (74604359717).

97997798116 is an frugal number, since it uses more digits than its factorization.

97997798116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012 (or 1006 counting only the distinct ones).

The product of its digits is 108020304, while the sum is 73.

The spelling of 97997798116 in words is "ninety-seven billion, nine hundred ninety-seven million, seven hundred ninety-eight thousand, one hundred sixteen".